In the present study, the relationships between the application of a diffuse tool applied to irrigation systems in watermelon crops are explored, as well as modeling and simulation as a tool applied to the same crop. Both tools were worked through Matlab® software, control cards with sensors and meteorological stations, where the data related to the climatic conditions of the Study Region were taken and measured. It is concluded that the simulated and applied system is economically viable as an alternative for the increase of production in small, medium and large farmers of Watermelon, in the Sabanas Region of the Department of Sucre. In addition, the system is technically stable from the point of view of Control Theory with an error ratio of less than 1.5%, demonstrating good levels of liquid optimization and energy consumption.